User David H - Physics Stack Exchange

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	558 reputation	bio	website		visits	member for	10 months
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12

42

votes

9

answers

7

kviews

Don't heavier objects actually fall faster because they exert their own gravity?

feb 5 at 0:25 Qmechanic♦ 17.1k

10

32

votes

8

answers

2

kviews

Is time continuous?

time universe

sep 25 at 0:32 samghost 1

3

24

votes

10

answers

3

kviews

What happens to the energy when waves perfectly cancel each other?

energy waves energy-conservation interference

jun 29 at 3:15 Helder Velez 1,518

7

17

votes

2

answers

903

views

Is there an intuitive reason the brachistochrone and the tautochrone are the same curve?

newtonian-mechanics brachistochrone-problem

nov 27 '11 at 22:49 Mark Eichenlaub 19k

5

15

votes

6

answers

5

kviews

Newton's cradle

energy-conservation newtonian-mechanics collision

nov 19 at 14:31 Emilio Pisanty 6,971

6

15

votes

7

answers

598

views

How is $\frac{dQ}{T}$ measure of randomness of system?

thermodynamics statistical-mechanics entropy

sep 10 at 20:57 Shaktyai 1,325

11

15

votes

5

answers

2

kviews

Why does calculus of variations work?

mathematical-physics lagrangian-formalism variational-principle

jun 8 '11 at 15:12 Georg 4,573

12

15

votes

4

answers

1

kviews

Einstein's postulates <==> Minkowski space. (In layman's terms)

special-relativity spacetime minkowski-space

aug 16 '11 at 6:34 Ron Maimon 44.8k

3

14

votes

3

answers

1

kviews

Fundamental question about dimensional analysis

units

mar 28 '11 at 1:06 David Zaslavsky♦ 27.3k

11

14

votes

2

answers

988

views

History of interpretation of Newton's first law

newtonian-mechanics history

jun 23 at 22:58 Geremia 57

4

13

votes

5

answers

780

views

What combinations of realism, non-locality, and contextuality are ruled out in quantum theory?

quantum-mechanics quantum-interpretations determinism locality bells-inequality

mar 9 at 19:15 Qmechanic♦ 17.1k

7

13

votes

6

answers

1

kviews

What exactly is heat?

thermodynamics heat temperature

jan 8 at 14:56 fedvasu 119

1

12

votes

3

answers

104

views

What is meant when it is said that the universe is homogeneous and isotropic?

general-relativity cosmology spacetime universe metric-tensor

apr 19 at 16:02 Qmechanic♦ 17.1k

10

12

votes

6

answers

2

kviews

Why the Principle of Least Action?

classical-mechanics lagrangian-formalism variational-principle action

aug 27 at 1:13 kleingordon 2,384

1

12

votes

2

answers

1

kviews

Why isn't Higgs coupling considered a fifth fundamental force?

particle-physics experimental-physics quantum-field-theory forces higgs-boson

nov 18 '10 at 22:38 Eric Zaslow 1,498

7

11

votes

8

answers

983

views

The Four-Clock Special Relativity Conundrum

special-relativity

jan 16 at 6:15 Muphrid 2,105

2

11

votes

3

answers

611

views

Is one way glass possible?

electromagnetism optics material-science

jun 6 '12 at 16:02 Steve B 3,359

2

11

votes

4

answers

376

views

Is there an easy way to show that $x^2-t^2=1/g^2$ for a (relativistic) body undergoing acceleration g?

special-relativity acceleration relativity

may 22 '12 at 21:30 Ron Maimon 44.8k

6

11

votes

2

answers

1

kviews

Is kinetic energy a relative quantity? Will it make inconsistent equations when applying it to the conservation of energy equations?

classical-mechanics special-relativity energy-conservation

nov 28 '10 at 23:04 David Zaslavsky♦ 27.3k

3

11

votes

1

answer

566

views

Mechanics + Thermodynamics: Bouncing Ball

classical-mechanics thermodynamics homework

aug 6 '11 at 5:02 Carlos 750

4

10

votes

4

answers

980

views

Newton's Bucket

general-relativity classical-mechanics relativity

jan 27 '11 at 16:32 Ted Bunn 11.6k

1

10

votes

4

answers

318

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Discontinuities and nondifferentiability in thermodynamics

thermodynamics differential-geometry phase-transition

nov 26 at 16:48 Arnold Neumaier 13.9k

3

10

votes

1

answer

1

kviews

What is the definition of how to count degrees of freedom?

definition degrees-of-freedom

oct 25 at 11:54 Qmechanic♦ 17.1k

4

10

votes

13

answers

1

kviews

What are the mechanics by which Time Dilation and Length Contraction occur?

special-relativity space time inertial-frames observer

oct 25 at 14:58 Anthony Rose 21

2

10

votes

5

answers

937

views

The square in the Newton's law of universal gravitation is really a square?

gravity experimental-physics newtonian-gravity

apr 27 at 16:17 Qmechanic♦ 17.1k

5

9

votes

3

answers

2

kviews

Physical meaning of Legendre transformation

classical-mechanics thermodynamics

may 2 '11 at 2:15 Nick Alger 293

4

9

votes

4

answers

2

kviews

Difference between thermodynamics and statistical mechanics

thermodynamics statistical-mechanics

dec 4 '11 at 21:29 Vijay Murthy 1,483

1

8

votes

3

answers

3

kviews

What's the difference between the five masses: inertial mass, gravitational mass, rest mass, invariant mass and relativistic mass?

mass

jan 7 at 21:21 Community♦ 1

2

7

votes

1

answer

574

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Pendulum with water dripping out

classical-mechanics fluid-dynamics

apr 8 '11 at 5:36 David Zaslavsky♦ 27.3k

4

7

votes

6

answers

943

views

What determines which frames are inertial frames?

general-relativity special-relativity rotational-dynamics

feb 4 '11 at 7:35 Luboš Motl 67.5k

David H

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